Milking machine



oct. 4; 1927.

. 1,644,435 y s. H. KNAPF MILKING MACHINE Filed Nov, 2o. 1924 2 sheets-sheer J A r` 1,644,435 Oct' 4 1927 s. H.4KNAPP MILKING MACHINE Filed NOV. 20. 1924 2 Sheets-Sheet v2 Patented' oci. 4, i927.

,SYDNEY HERBERT To sTAiv-rsmius .Taurasi-Tortilla,

iaiitigiiie MACHINE.

pplication led'November 20,19%, Serial No.

This invention relates to milking machines and provides an improved machine of comthe pump piston, thecompressed air being f prevented from yentering the vacuum cham,- ber of the releaser, by `'non-return"valves' located in the pipe lines from the pump to the releaser, between the latter and the pulsator. A The pulsator` is double acting and is designed to create the pulsations in the outer spaces ofthe lteat cups7 necessary to ensure iriilking, and also to create pulsations inthe lower Achamber of the releaser, to permit the discharge of milk therefrom.

yThe improved machine'will be more particularly described in conjunction with the accompanying drawingsywherein:` y i Figure 1 isa frontelevati'on of the machile'whi'leV l Figure 2 is a side elevation, and Figure 3 a plan view thereof. l ,d Figure lisa vertical sect-ion of the releaser d a Figure A5 a longitudinal section of the pulsator'and Figure 6 a vcross sectional view thereof on the linev AJA, Figure.`

'Figure 7 averti'calsectien ofV one Aof the s nonr'efturny valves used between the pulsator and releaser. 1` 7 FigureS aA vertical pump exhaust valves,

CID

section of onel of the lFigure) a front elevation of' `a modified'.

form of machine, and Y s, y Figure 10' a 'crosss ectionalwiewof the 1 'milk xchute.

A double uitingpump'11operableby anyf;V "suitable-prime mover,` and provided at eachfend with an exhaust valve 2 ha'sconnected 50 a nonreturn valve 4i i r flfle'yond the valves 4- I (reading from the pum-p pipes are connected together :by pire 5., 'fieebefee 'rele-'Ibias' the Wfl-Veit receiving at each end a Vpipe 3 igneach o fwhiclris fitted 751,158, and in NewV Zealand .January 18, 1924.' i

said pipes 3 are connected together by pfulsator. pipeand casing 6.- i

The pipe 5 is :connected.at"5,a-with the vacuum chamber 7 of areleaser Figure t of the type having an *upper chamber, "the outlet from which to a lower chamber 8 is controlled by an inner vflap valve-Q said lower KNAPP, or Gew-wim; Westeraam @tenermi-assiali@ chamber S being' provided with an external flap valve 1 0. for controlling its outlet, and

nipple 11.

The pipe is also-connected at 12 with a ceiitralnipple 13 on thepulsator casing 6. f

f-Nipplesflll on the pulsator casing 6,. one

at reach" side of, the nipple lrareadaptedto be connectedpreferably by means of flexible tubing 14 one with the nipple llof the `lowerjchamber 8 of the releaser, and the other withV the outer or pulsation spaces of teat cups.

The pulsator casingti is open at its ends to the pipeslS-throughi connections 3? and contains" a' pair of atmospheric ports 18.` The valve'l of the pulsatorFigures pandfol is pneumatic pulsations through the a formed with a central' recess l16 in its under side, said recess being always over-the: nipple 1 8, and longenough to connect with the latter,feither of the nipples 111g l f Annulargrooves 17 in the pulsator valve ivithtachother. l A

Milk from the neat .cups is ,delivered under projectsfatfbotli ends from the upper vportion iof the releaser, the other yendof'said ing ofthe pipe.' 1

l'M'llr Yenter-ing the V*15 near theends` thereof, are' provided for f the purpose of connecting .j the nipples 14H. f

. with tlieatmospheric portsl, said grooves y.

' 17being located 'so that whichever iii-pple i 1 4 is not under vacuum thIOuglithev 'recess 16f and nipple 18, is open 4to atmosphere through afgroolve 117, and port 18, the other groove 17 .and `por-.t'lS in the 'meantimenot 4registering vacuum into the upperchamloerl 7Iofthe vre- "f leaser througha preferably flexiblepipej19El .connected to one-end of aff pipe 19, which Y Pipe *la vis ,deliver@ClV i i downwards to-iiear the. bottom of theupper chamberv7'and behind the valvef'9., lby" af ver-fV Y. tical lpipe 121,1the latter 'directingthe milk well 'away from the .vacuum 'connection't .thereby preventingjany -tendency'nof theiriilkV Ito .enter the connectiongf1 'besides '.wh'ichgthe deiiveey lefe .the milk te .behind the valve 9 Y facilitates its passage tothechamber 8 when 'j' "the latter lis alsoput under vacuum.

cated between the Vnonreturn valves 4 and the 'l releaser While the pump is 'fitted at each end ,i

` i i' "the'releasen in: the torni of machine shown in Figure j with a blowout cock 24.

Thenon--return valves;` 4' insertedv in the lo pipes Bybetyveen theV .pulsat'or and the re- V"leaser are` constru'ctedA tolift' and allow theV Vsuction side of the lpump piston to alwaysY actin the pipe 5,fthe' upper` chamber 7 'of the .rel'easer and the recess/16 of .the pulsator yvalvevl', so'that saidl pipel chamber andre- VVcess are i' inWha-t. direction the pump piston lis VInoving. On the othervhand saidvalvesd close V.under pressure and' .eo1npressed air" or presi y Y i j i' 26,1 sui'e'from' the pressure Vside 'of thepump pis# Y 5 and parts eonnectedthereto, butis diverted V intoy the connections 3a' to. act upon `fthe ends 'stonvalve '15. Therefore :While one fot the P1 pipe?)v and one end ofthe .valve 15 are under VVvacuum; airfisbeing .compressed and'iorced@ chine shown 1n ihgureV 9, is inade Without the "vt-hroughthe;other pipe 3 to behind the. valve f 7.15,' thepressurefnever pipie 'jwhichis 'al-Ways under vacuum:

The operation of e .the pulsator. valve l listhereby made positive, decided .and rapid.

i .finfitsaction,with the result that vsharp and Well definedpulsationszarecreated for transmission through theflexible pipes 14 to the :outerf spaces ofthe-teat eupsjandV also Vto the "lovvercha'niber 8 off'the releaser.v f

l VATheffv'alvef15 ismaintained in itsfcorrect y position orv isprevented from turning in the j Vsurfa'cejno'r top of the recess 16y ff il Thev exhaustk valves 2 perrnit the escape to l. `atrnospherejet` pressure in'"excess-3.0i:VV that uired,:to assist in*theoperationgofV the satonjvalve 15..`

-.Thepvalves2 ne dl not necessarily beifitted onthegpuinp 1 but can be vlocated-on the ends- Y of thejpulsatorfcasing 6"or:i nthe..pipes 3,

e ,valvesf2 '(8) are4A rnade 'smaller rapid l' closing.-Vv When fth'erpurnp piston and'in `a Vconvenient form 5i `eachconsists f'of V'a fecasing'formed v"with a seating 28 on which i Stheiballg2f.iclosesfunder suction said' casing Vbeine? 21.Osedeti,

ndf'c'ontal'ning" air escape Vports .30. 1

*AQ ,convenient Viforr'n :of i nonreturn.V v 4(Figure V7)7'comprises .a casing containing ay ball; i31.f11a-d'apted.to close on a seating 32 ,f under. .pressure from ithe pump 1 1, 'said ball always under. vacuum, Vno matter before'. r

' Vton is `prevented from. pass1ngto. thefpipev into the releasers 39, 40 andarebevelled or being admittedto the '17 ybeing `usedasv loeoretov admit air'V to the nipples 14 Jrorn the-air 'ports'` 1S, said, nipples 14 heilig in this case connected e. V

."casing" l6"'byf a" pin 6? inserted.crossways V'through vthe latter,v justbelow.- the i flat under" (Figure 6)..

Y than fthe.' nonreturn. valves to ensure their y lon the exhaust' side of? beul 27 f fittedivvthin A e .f

` alve` 4j enter the chute.' f- Y ,A puinp,r 4relea'ser,V and pulsator connected," and operated as describedyare provided'in respect of `eael'i set oil'v teat cups, t he' l "pumps beingprevented "from closing fthe i` outlet 33e li being driven the.` saine operating 'means ei rom the'easingWhenithe pipe 3 is under? vacuum,- by projections. 341 from a ring 35 Y means of which it mayy besecured kto anupright, Wall or other supporting. nieinher a bracket 37 being .provided for vsupporting end loi the p'uinp i, said pipes, Sbeing connectedbythepulsator vpipe or casing '6 and .beingV The endsj oi-the pipeV 88.project inclined and have resting Vthereon pivoted valves 41,42,` lowerexternal lapyalves' 43, 111 beingkalsov provided to eachgreleaser;

rhe pulsator valve 15 in the orin'of'maiitted With the nonreturn valves 4L- as.

central vacuuin'recess 16, the 'annular grooives i' through connections 45, and 46 VoneY `With the The pulsations to they outer spacesoi Vthe lteat'cups ,are transmitted -from either of the releasers 8,9, 1Q through a preferablyxflenible pipe 17.

,releaserBQ and the other Withthe releaser 40. f

Ways under .vacuuml With'- one off the releasers 39, i0throughampipe 3; Whichever voil thereleasers is connected With V' t'hepipe receiving pressure freinV the punipgbeing e' :V

Each releaseil 39,'11Ois therefore-falterv.-

Vnadcely putV y"under vacuum, by the pui'np 1 througha pipe Brand nonreturnvalv'e 4, and opened toair through either lpipeilV 01146 and theipulsator, alvacuuin`v beinginain-v vtained intl'iefpipes 38j and l19%. 'f f'he milk draivniroin the` teat'tcups discharges from i thereleasers 89, 4 0 alternately..

provided 'in' the lattery to allovvfthefmillr i to The jinillzj' vdischarges .from the l releasenL .shown in Figures 1 and 2, 'or the" rel ea-sers;A shown 'ing FgureqQginto V a chute 41 pref-"1 1 2 a 'e'rablyl Water. jacketedey as fat 1 2 k'and/ pr'o vided- VWith-a hinged cover ege,-openingsfl"being and the releasers discharging into a common clJHG. c

The whole apparatus is so compact that if necessary it may readily be moved set up and operated in a number olil cow bails in succession. .Y

The various pipe lines areprovided with ports and plugs where required to facilitate inspection and cleaning ot the apparatus.

Vhat I do claim and desire to obtain by Letters Patent of the United States ,of America is Y l. In a milking machine, a pressure and vacuum pump and pulsating releaser, a slide valve pulsator, and means connecting the pump with the pulsator whereby to eHect the application of vacuum to Vone end of the pulsator valve simultaneously with the apr plication of compressed air to the other endy of the valve for the purpose of operating the latter.

2. In a milking machine, adouble acting pressure and vacuum pump, a pulsating releaser, a slide valve pulsatorfand means conne'cting the pump with the pulsator whereby at each stroke of the pump piston compressed air is applied to one end of the pulsator valve while the other end of the latter is simultaneously placed under vacuum.

3. In a milking machine, a double acting pressure and vacuum pump, a pulsating releaser, a'double acting slide valve pulsator, and means connecting the pump with the pulsator whereby at eachV stroke of the pump piston compressed air is applied to one end ot' the pulsator valve while the other end of the latter is simultaneously7 placed under Vacuum. Y.

4. A milking machine as claimed in claim l, characterized by the provision of means connectingthe pump with the pulsating releaser and non-return valveslocated in said connecting means `to prevent air entering the releaser from the pump. .v

5. A milking machine as claimed in claim l, characterized in that the connecting means connects the opposite ends of the pump ywith* the opposite ends of the pulsator, means con-V necting the first connecting means with the vacuum chamber 'of the pulsating releaser,

and non-return valves in the last mentioned i connecting means between the pulsator and v releaser.

y 6. A milking machine as claimed yin claim e l, characterized in that the connecting meansA yconnects the opposite'en-ds of the pump with `the opposite ends of the pulsator, means connecting the first connecting means with the vacuum chamber of the pulsating releaser,

and non-return valves in the last mentioned connecting means between. the pulsator and releaSer, and pressure escapevalves smaller than the non-return valves in the connection between the pump and the pulsator.

'7. A milking machine comprising a pres-k sure and vacuum pump, a pair of pulsating ieleasers, connected together by a pipe the ends of whichproject into the releasers and are fitted with Hap valves, a milk pipe fromv teat cups communicating with the releaser connecting pipe, a pulsationpipe rom'a releaser to teat cups, pipes fromthe pump ends each communicating with al releaser anda pulsator` casing, air pipes from the pulsator to the releasers, and non-return valves itted' in the pipes from the pumpends, between thel pulsator connections and the vreleasers;l

8. vIn a milking machine, a pressure and vacuum pump, a pulsating releaser including upper and lower chambers, and fa single pulsator, means lfor connecting thepulsator with the outer spaces ofteat cups, meansA connecting the pulsator with the lower cham.-

ber of the releaser .tor effecting'pulsation therein,.means connecting the pulsator with the Vupper chamber of the'releaserfto constantly maintain theflatter under vacuum, and means for actuating the pulsator.'

In testimony. whereof I have atlixed my -y signature.

SYDNEY HERBERT KNAPP. n 

